<template>
  <div class="auth-page">
    <div class="container page">
      <div class="row">

        <div class="col-md-6 offset-md-3 col-xs-12">
          <h1 class="text-xs-center">{{ isLogin ? 'Sing in' : 'Sign up' }}</h1>
          <p class="text-xs-center">
            <!-- <a href="">Have an account?</a> -->
            <nuxt-link v-if="isLogin" to="/register">Need an account?</nuxt-link>
            <nuxt-link v-else to="/login">Have an account?</nuxt-link>
            
          </p>

          <ul class="error-messages">
            <template v-for="(messages, field) in errors">
              <li v-for="(message, index) in messages" :key="index"
                >{{ field }} {{ message }}</li>
            </template>
            <!-- <li>That email is already taken</li> -->
          </ul>

          <form @submit.prevent="onSubmit">
            <fieldset v-if="!isLogin" class="form-group">
              <input class="form-control form-control-lg" type="text" 
                v-model="user.username" placeholder="Your Name" required>
            </fieldset>
            <fieldset class="form-group">
              <input class="form-control form-control-lg" v-model="user.email" type="email"
                 placeholder="Email" required>
            </fieldset>
            <fieldset class="form-group">
              <input class="form-control form-control-lg" v-model="user.password" 
                type="password" placeholder="Password" required minlength="8">
            </fieldset>
            <button class="btn btn-lg btn-primary pull-xs-right">
              {{ isLogin ? 'Sing in' : 'Sign up' }}
            </button>
          </form>
        </div>

      </div>
    </div>
  </div>
</template>

<script>
import { login, register } from "@/api/user"
// 仅在客户端加载 js-cookie包
const Cookie = process.client ? require('js-cookie') : undefined

export default {
  name: 'LoginIndex',
  middleware: 'nonAuthenticated',
  data() {
    return {
      user: {
        username: '',
        email: "", // jake@jake.jake
        password: "" //jakejake
      },
      errors: {} // 错误信息
    }
  },
  computed: {
    isLogin () {
      return this.$route.name === 'login'
    }
  },
  methods: {
    async onSubmit(){
      try {
        // 提交表单请求登录
        const { data } = this.isLogin 
          ? await login({ user: this.user }) 
          : await register({ user: this.user })
        // console.log(data)
        // TODO: 保存用户登录状态
        this.$store.commit('setUser', data.user)
        // 为了防止刷新页面数据丢失，需要把数据持久化
        Cookie.set('user', data.user)

        this.$router.push('/')
      } catch(err) {
        this.errors = err.response.data.errors
      }
    }
  }
}
</script>

<style>

</style>